Definition of "erythematosus" [erythematosus]

• An eruption of red lesions (noun)

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• "The finding suggests that environmental factors determine whether genetically susceptible twins will contract lupus, or systemic lupus erythematosus, which is characterized by the immune system attacking the body's own cells."
• "Sjogren's syndrome can occur as a primary disorder or secondary to other autoimmune diseases, principally rheumatoid arthritis or systemic lupus erythematosus lupus, Belmont said."
• "Federal regulators estimate that 300,000 to 1.5 million Americans have systemic lupus erythematosus and said in a statement that Benlysta, when used in conjunction with other drugs, offers a way to combat a particularly difficult disease."